Unchecked Return Value Affecting libssh package, versions <0:0.9.6-14.el8


Severity

Recommended
0.0
low
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.11% (45th percentile)

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  • Snyk IDSNYK-CENTOS8-LIBSSH-6131545
  • published19 Dec 2023
  • disclosed18 Dec 2023

Introduced: 18 Dec 2023

CVE-2023-6918  (opens in a new tab)
CWE-252  (opens in a new tab)

How to fix?

Upgrade Centos:8 libssh to version 0:0.9.6-14.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh package and not the libssh package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.

CVSS Scores

version 3.1